Lt. Gen. Kenneth E. Tovo, USA, has been nominated for assignment as deputy commander, U.S. Southern Command, Miami, Florida.
Col. David W. Riggins, USA, has been assigned as deputy commanding general, U.S. Army Research, Development and Engineering Command/senior commander, Natick Soldier Systems Center, Natick, Massachusetts.
Brig. Gen. John G. Ferrari, USA, has been assigned as deputy director, program analysis and evaluation, office of the deputy chief of staff, G-8, U.S. Army, Washington, D.C.
Brig. Gen. Daniel P. Hughes, USA, has been assigned as program executive officer, command, control, and communications (tactical), Aberdeen Proving Ground, Maryland.
Maj. Gen. Margaret W. Boor, USAR, has been assigned as commander (Troop Program Unit), 99th Regional Support Command, Fort Dix, New Jersey.
Ellen Stofan has been named the chief scientist for NASA, Washington, D.C.
Jefferson S. Brown has been named president of Cobalt Data Centers, Las Vegas.
Capt. Paul J. Verrastro, USN, has been selected for promotion to rear admiral and will be assigned as executive director, deputy assistant secretary of the Navy (acquisition and procurement), Office of the Assistant Secretary of the Navy (research, development and acquisition), Washington, D.C.
Sabre Systems Incorporated, Warrington, Pennsylvania, has named Dennis DePriest as senior executive director and Kalmen “Kal” Leikach as senior strategic advisor.
Lynn Martin has been named vice president of U.S. Public Sector, VMware, Reston, Virginia.
Capt. Daniel H. Fillion, USN, has been selected for promotion to rear admiral and will be assigned as director, J-5, U.S. Southern Command, Miami.
Rear Adm. Ricky L. Williamson, USN, will be assigned as commander, Navy Region Southeast, Jacksonville, Florida.
Rear Adm. Scott A. Stearney, USN, will be assigned as commander, Strike Force Training Atlantic, Norfolk, Virginia.
JTG Incorporated, Vienna, Virginia, has appointed Ahmed Shehata as president.
Alexander Müller-Gastell has been appointed chief financial officer of the Signalhorn Group of Companies, Backnang, Germany.
Rear Adm. Althea H. Coetzee, USN, will be assigned as contingency contracting deputy director, Office of the Under Secretary of Defense (Acquisition, Technology and Logistics), Washington, D.C.